B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/14 (2006.01) B01D 53/50 (2006.01) B01D 53/62 (2006.01) B01D 53/75 (2006.01)
Patent
CA 2675503
A gas cleaning system, which is operative for cleaning a process gas containing carbon dioxide and sulphur dioxide, comprises a combined cooling and cleaning system (16), and a CO2-absorber. The combined cooling and cleaning system (16) comprises a first gas-liquid contacting device (50) located upstream of the CO2-absorber and operative for cooling the process gas by means of a cooling liquid, and for absorbing into the cooling liquid sulphur dioxide of the process gas, such that a cooling liquid containing sulphate is obtained. The combined cooling and cleaning system (16) further comprises a second gas-liquid contacting device (94) located downstream of the CO2-absorber and operative for removing ammonia from the process gas, which has been treated in the CO2-absorber, by means of bringing the process gas containing ammonia into contact with the cooling liquid containing sulphate.
L'invention concerne un système de nettoyage de gaz, qui est opérationnel pour nettoyer un gaz de transformation contenant du dioxyde de carbone et du dioxyde de soufre, qui comprend un système de refroidissement et de nettoyage combiné (16), et un absorbeur de CO2. Le système de refroidissement et de nettoyage combiné (16) comprend un premier dispositif de contact gaz-liquide (50) situé en amont de l'absorbeur de CO2 et opérationnel pour refroidir le gaz de transformation au moyen d'un liquide de refroidissement, et pour absorber dans le liquide de refroidissement le dioxyde de soufre du gaz de transformation, de sorte qu'un liquide de refroidissement contenant du sulfate est obtenu. Le système de refroidissement et de nettoyage combiné (16) comprend en outre un second dispositif de contact gaz-liquide (94) situé en aval de l'absorbeur de CO2 et opérationnel pour éliminer l'ammoniac du gaz de transformation, qui a été traité dans l'absorbeur de CO2, par l'intermédiaire de la mise en contact du gaz de transformation contenant de l'ammoniac avec le liquide de refroidissement contenant du sulfate.
Gal Eli
Alstom Technology Ltd.
Smart & Biggar
LandOfFree
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